There are a lot of clips online of Cole Palmer getting frustrated with his team-mates amid Chelsea's run of just two wins in 10 matches across all competitions.
The 22-year-old forward registered a club-record 26 goals and 13 assists last season and is now himself declining in terms of goal involvements.
He hasn't scored in six matches and has not registered an assist in 13 matches, but his manager Enzo Maresca suggests he is simply a "human being" and frustrated by recent results, not his team-mates.
Many will be watching Palmer as Chelsea have a favourable run of matches against Southampton, Leicester and Copenhagen.